Maintenance fees coming due

Holtec International

35 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 21, 2026. Unpaid by May 21, 2027, that one lapses early.

A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5 and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the six month grace period that follows.

Patent	Title	Holder	Status	Fee due	Lapses if unpaid	Expires	Confidence
US 10,295,266	Tubular Heat Exchanger Having Multiple Shell-Side and Tube-Side Fluid Passes Holtec International In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Jan 22, 2037 · High confidence	Holtec International	In force	Nov 21, 2026	May 21, 2027	Term ends Jan 22, 2037	High confidence
US 10,297,356	Storage System for Nuclear Fuel Holtec International In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Apr 24, 2035 · High confidence	Holtec International	In force	Nov 21, 2026	May 21, 2027	Term ends Apr 24, 2035	High confidence
US 9,047,996	System and Method for Transferring And/Or Working Near a Radioactive Payload Using Shield-Gate Apparatus Holtec International, Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends May 21, 2032 · High confidence	Holtec International, Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends May 21, 2032	High confidence
US 10,311,987	Wet Storage Facility for Nuclear Fuel Holtec International In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Feb 9, 2038 · High confidence	Holtec International	In force	Dec 4, 2026	Jun 4, 2027	Term ends Feb 9, 2038	High confidence
US 11,670,430	Nuclear Fuel Storage System with Integral Shimming Holtec International In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Dec 8, 2040 · High confidence	Holtec International	In force	Dec 6, 2026	Jun 7, 2027	Term ends Dec 8, 2040	High confidence
US 10,332,642	Apparatus for Storing And/Or Transporting High Level Radioactive Waste, and Method for Manufacturing the Same Holtec International In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 Term ends Mar 31, 2033 · High confidence	Holtec International	In force	Dec 25, 2026	Jun 25, 2027	Term ends Mar 31, 2033	High confidence
US 11,694,817	System and Method of Storing And/Or Transferring High Level Radioactive Waste Holtec International In force Fee due Jan 4, 2027 Lapses if unpaid Jul 6, 2027 Term ends Nov 23, 2033 · High confidence	Holtec International	In force	Jan 4, 2027	Jul 6, 2027	Term ends Nov 23, 2033	High confidence
US 10,343,240	Vertical Bundle Air-Cooled Heat Exchanger, Method of Manufacturing the Same, and Power Generation Plant Implementing the Same Holtec International In force Fee due Jan 9, 2027 Lapses if unpaid Jul 9, 2027 Term ends Jun 4, 2032 · High confidence	Holtec International	In force	Jan 9, 2027	Jul 9, 2027	Term ends Jun 4, 2032	High confidence
US 11,715,575	Nuclear Materials Apparatus and Implementing the Same Holtec International In force Fee due Feb 1, 2027 Lapses if unpaid Aug 2, 2027 Term ends Oct 1, 2036 · High confidence	Holtec International	In force	Feb 1, 2027	Aug 2, 2027	Term ends Oct 1, 2036	High confidence
US 11,721,447	Impact Amelioration System for Nuclear Fuel Storage Holtec International In force Fee due Feb 8, 2027 Lapses if unpaid Aug 9, 2027 Term ends Aug 6, 2041 · High confidence	Holtec International	In force	Feb 8, 2027	Aug 9, 2027	Term ends Aug 6, 2041	High confidence
25 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 35 patents shown. Soonest fee due date first, then patent number.

Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.

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Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.